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Abstrak :
Pada jembatan segmental sambungan antar segmen membutuhkan kunci geser. Penelitian ini dibahas untuk mengetahui perilaku sambungan kunci geser ferro cast ductile (FCD) dengan epoksi. Hasil pemodelan tipe 1 menunjukan bahwa beban potensi retak beton akan meningkat jika kombinasi mutu beton dan FCD semakin tinggi, gaya prategang semakin besar, dan jumlah shear key semakin banyak; akan tetapi, semakin turun jika epoksi semakin tebal. Sedangkan pemodelan tipe 2, hasil force control hubungan tegangan utama serta tegangan geser dengan perpindahan setelah fase linier akan meningkat; akan tetapi pada hasil displacement control menunjukkan adanya penurunan tegangan utama serta tegangan geser setelah mencapai tegangan tertinggi. ...... On segmental bridges connection for each segment need shear key. This study purposed to observe the behavior of ferro cast ductile (FCD) epoxied shear key. The results of this study on modelling type 1 is the potential crack of concrete would be increased if the combination of the quality of concrete and FCD were higher, prestressing forces were greater, and the number of shear key were increased but potential crack of concrete would be decreased if the thickness of the epoxy were increased. While model of type 2, for force control relationship of maximum principal stress and shear stress with vertical displacement would be increased after linear phase but for displacement control decreased after maximum principal stress and shear stress reached the highest stress.

Abstrak :
ABSTRAK
Jembatan segmental dengan sistem beton prategang menjadikan sambungan kunci geser sebagai media penghubung yang penting untuk diperhatikan. Penelitian ini membahas sambungan kunci geser tanpa perekat bermaterial baja mutu sedang serta mensimulasikan berbagai variasi parameter untuk melihat perilaku dari sambungan kunci geser. Pemodelan dilakukan menggunakan software ANSYS dengan dua tipe pemodelan. Hasil penelitian pemodelan tipe 1 menujukkan beban potensi kegagalan beton dan kunci geser meningkat jika kombinasi mutu beton dan baja mutu sedang, gaya prategang, kemiringan tendon prategang serta jumlah kunci geser semakin besar. Hubungan tegangan utama serta tegangan geser terhadap perpindahan vertikal, pemodelan tipe 2 menunjukkan adanya osilasi pada tegangan geser setelah melewati nilai maksimum dan kemudian meningkat.

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ABSTRACT
The development of segmental bridge with prestressed concrete systems make shear key joint as connection media that is important to note. This study discussed about dry joint-shear key with the material used was medium-grade steel and applying several parameters to see the behavior of the shear key joint. Modeling implemented using ANSYS software with two type of material model. The results in modeling type 1 showed that potential load of concrete and shear key would be greater if combination of the grade of concrete and medium-grade steel, prestressing force, angle of prestressing tendon, and number of shear key were increased. Principal stress and shear stress compared with vertical displacement relations, in modeling type 2 showed an oscillation in the shear stress after passed the maximum value and then increased.